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Other Intangible Assets Major Classes (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
May 31, 2018 | May 31, 2017
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | $ 665,759 | $ 628,575
Amortized intangible assets, accumulated amortization | (330,935) | (288,365)
Amortized intangible assets, net other intangible assets | 334,824 | 340,210
Total Other Intangible Assets, gross carrying amount | 915,207 | 861,457
Total Other Intangible Assets, net other intangible assets | 584,272 | 573,092
Trademarks and Trade Names |  |
Intangible Assets by Major Class [Line Items] |  |
Indefinite-lived intangible assets, acquisitions | 249,448 | 232,882
Indefinite-lived intangible assets, net other intangible assets | 249,448 | 232,882
Formulae |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | 221,812 | 214,677
Amortized intangible assets, accumulated amortization | (140,160) | (128,825)
Amortized intangible assets, net other intangible assets | $ 81,652 | $ 85,852
Formulae | Minimum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 10 years | 5 years
Formulae | Maximum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 33 years | 33 years
Customer-Related Intangible Assets |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | $ 369,687 | $ 339,892
Amortized intangible assets, accumulated amortization | (147,831) | (122,772)
Amortized intangible assets, net other intangible assets | $ 221,856 | $ 217,120
Customer-Related Intangible Assets | Minimum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 5 years | 5 years
Customer-Related Intangible Assets | Maximum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 33 years | 33 years
Trademarks and Trade Names |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | $ 36,671 | $ 36,461
Amortized intangible assets, accumulated amortization | (17,998) | (15,480)
Amortized intangible assets, net other intangible assets | $ 18,673 | $ 20,981
Trademarks and Trade Names | Minimum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 5 years | 5 years
Trademarks and Trade Names | Maximum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 40 years | 40 years
Other Intangible Assets |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, gross carrying amount | $ 37,589 | $ 37,545
Amortized intangible assets, accumulated amortization | (24,946) | (21,288)
Amortized intangible assets, net other intangible assets | $ 12,643 | $ 16,257
Other Intangible Assets | Minimum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 2 years | 2 years
Other Intangible Assets | Maximum |  |
Intangible Assets by Major Class [Line Items] |  |
Amortized intangible assets, amortization period | 30 years | 20 years

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